Flash light



" w. F. HENDRY Oct. 2121930.

FLASH LIGHI" Filed April 14, 1925 mmm BY gd f nonufr V Patented Oct. 2l,1930vk WILLIAM HENDRY, or ossINING, NEW Yoan', AssIeNoR, :BY MEsNEASSIGNMENTS,

j To NATIONAL CARBONCQMPANY, INC.,

Applicatiorrled April 14,1'9257 ISerial` No; 22,962.,` 'Y

Thisinvention relates to improvements in flashlights, and morevltiarticularly vto a new and improved focusing arrangement forflashlights.

i 5 In accordance with the present invention,

. the focusing of the light is controlled through the agency of a springplaced under tension between the refiector and the lamp socket betweenwhich it is located. For the purpose of l permitting readyassembly ofthe fiashlight, the reflector is provided with a` sufficiently largeopening to permitpassage of thelight bulb. The socket is firmly heldunder spring tension between the battery and the fixed reflector, thefocusing being effected by reciproeating the batteries. vRotation of thesocket is prevented, preferably bymeansvof the contact spring whichconnects the reflector with the switch.

These and other features of the invention will, however, more clearlyVappear from the following detailed description of a preferredembodiment thereof and the appended claims.

In the drawings, Fig. 1 illustrates a vertical cross-section of aflashlight embodying the present invention; Figs. 2, 3 and 4 areenlarged sectional views of the switch in its normal, intermediate andactuated positions, respectively.

The flashlight consists of a tubular casing' containing dry cells 2surrounded by an i11-y sulating wrapper. The lowermost dry cellrestswith the bottom of its zinc container r electrode on the flange ofa cup 3 projecting 3 from a cap 4 which is in screw-threaded engagementwith the lower open end ofthe cas-l ing 1. The carbon terminal 5 of theuppermost dry cell is in engagement with one terminal 6 of anincandescent electric light bulb 7. The other terminal of the light bulbis connectedl with a screw-threaded metallic sleeve or base 8 which isheld in a metallic socket 9. The metallic socket has a metalliccup-shaped Hange 10 resting on a disc llrofin- The disc 11 restsonashoul` sulatingmaterial. der formed in the casing. The disc 11 isperforated, permitting the passa-ge of the lamp terminal 6. The upperpart of the tubular casing is formed into a bell 12 which surrounds ametallic reflector 13 insulated from vfree end of whichis Ain permanentengage-l ythe casing by meansof al sleeve 14of suitable material.Theinsulation 14 rests. on Aa. shoulderfformed intothe bell 12.v Thereflector is yheld in place by means of alens 15i clamped against'thebell throughy the agency of a ring Y At its apex the reflector 13 isprovided with an opening 17 which is` large enough to'per.- mit thepassageofthe light bulb, and the re.- flector is spacedv fromvthelsupporting socket -ofthe lamp lObyfmean'sv of a coiled springLlS,.tjlie lower endofiwhich'lies withinthe cup 10 1 and the upper end ofwhich surrounds aj skirt 19 depending from the reieclt-orfl13.k The.spring 18 serves vfor threefpurposes it main- .tains the terminal 6 ofthe lampinzfirmconir .tact with the carbon terminal v5-0f the battery;dit absorbs `shocksthat may ,otherwise cause the destruction `ofthellamp iilament when a Yblow is strucknear the lens end offtheflash#light; and it acts as a meansV for permitting focusing ofthe'flashlight. By turning theicap y l' -L'Ilhe circuit of thelamp 1sclosed through 8, 9, 18,- the reflector13,-a` flat spring 20,'the 1 12ment with thereflector, ametallic sliderl 21, casing` .1, cap 14, 3, andb ackthrough-the f batterytothe other terminal of the light. n I Througha portionof its length the spring 20 mi is vsurrounded by insulation 32,`and it is fastenedl to casinglby means ofrivets 33,34 which, however,do notsmakegrelectrical contactwith the spring. Thespring 20,7passesthrough anotch 31in the disc-11 and serves 55 thus for the purpose ofpreventing rotation of the latter." l .Y The 4switch structure isillustrated more* in detail inFigs.` 23pand 4.7 It consists ofa slider21 fromV which a butt9n22-projects 'mn through a slot 23 in the casing1, said button holding a corrugated pieceof insulation 24:.

By means of its bent end 25, the spring 2O presses the slider againstthe innerV surface of the casing l, the contact between' the slider `andthe casing being established by means of of the lamp circuit. When,however, the

slider 21 is moved into ,its-,intermediateposic tion, in which thespring end 25lies, within a corrugation 30,'-theinsulating lug 27 beingoppositeY the perforation 29,willj permitV eni gagementl between|` thefree end of spring 2G11fandthe conducting slider l21, completing 3. Ina-lashlight, a casing, a battery in said casing, an electric light bulbconnected with said battery, a reflector in said casing,

tension between said lsocket 4and said re- Va, socket for the base ofsaid bulb between i said reflector and bulb,a spring placed under ilector, 'means for vertically moving said x socket and bulb with respectto said reiiector and against the tension of said spring to foci1sthelight, a contact spring-u or controlling the circuitof said bulb, andmeans including said contact springl for; holding saidg V socket againstrotation. l

In testimony whereof, I have signed *myV namev to: t'his` specification,this 9th-day of thus the lamp circuit whenever the button 22 is pressedagainst the tension of spring 20; If'it' is,desiredfpermanently,to lightthai-lamp, thesliderl is` pushed linto the position illustrated inFig.4, in which permanent contact: is established'` between the spring- 20andtheslider'2l andtherefore-withfthe casing 1L Y The'switch'is held'intlis advanced Apos'i- Y l tion by' Sheep-finesse 2 5..

ing, a.- laringfhead' for said casing, a'metallic reflector "hel'dwithin saidV head and insulated1therefrom,la battery ofV dry cellswithin said-1 casing, an incandescent electric light bulb* adaptedy topass through an opening provided at the apeX ofsaidrelector, a discotinsulation, a metallic socket carried by saidi disc, the base of saidbulb being in engagement with said socket and one terminal offthe bulbprojecting 'through said socket and `-disc into contact with oneelectrode -of a'drycelh ametallicv cup laterally projectv ingy fromsaid. socket'and carried by said disc, a coiled?spring'jbetween saidvcup and, theibottfomfof saidreiectona screwthreaded cap-cooperatingwiththe other end of'said `i casingqfor.vertically displacing saidV cells,'socket and' bulb against' the tension of said f spring,` a switchAfor?l controlling the V circuit of'saidA bulb, andv a Contact springfastened ,tosaid casing and cooperating ati one end Vwith-,saidVswitch`f-andi contacting at its otherV end'.l with said. reflector, saidcontact spring tation'.

" 2 Ina flashlight, a. casing, a batt-ery in said casing, an electriclight 'bulb' connected with said battery, areflector in Vsaid casing, Y

a'y socket forthebasxe of Vsaid-"bulb between said? reflectorand'battery f adapted to axial serving-also toi-hold" said disc against ro-Y adjustment, a Contact spring orcontrolling i the-i circuitoff'salidbulb, and means including said contactl spring agaixis t2Arotation.,

@aligning Sai@ Socket I'

